#include <stdio.h>

int main(void)
{
	int a=12;

	printf("a divided by 4 : %d\n", a>>2);
	printf("a multiplied by 5: %d\n", a << 2 + a);
	printf("a multiplied by 5: %d\n", (a<<2+a));
	printf("a multiplied by 5: %d\n", (a<<2)+a);
	printf("a multiplied by 4: %d\n", a<<2);
	printf("a multiplied by 4: %d\n", a<<2+1);
	printf("a multiplied by 4: %d\n", (a<<2)+1);

	return 0;
}

